Lubricator



Dec. 8, 1936. c. E. STEWART 2,063 ,3 52

LUBRICATOR Filed Aug. 20, 1934 2 Sheets-Sheet l Inventor C/7/ Z9JE Jie61/ 2 By 5,,

Dec. 8, 1936. v E, STEWART 2,063,352

LUBRI CATOR Filed Aug. 20, 1934 2 Sheets-Sheet 2 lll-flllll'IIIIIIIIIIIIII/ll/II/ &

Attorney Patented Dec. 8, 1936 PATENT OFFICE LUBRICATOR Charles E.Stewart, Verdun, 'Quebec, Canada, assignor to Juno Corporation, Ltd.,Montreal,

Quebec, Canada Application August 20, 1934, Serial No. 740,563

6 Claims.

The present invention relates to oil lubricators of the force feed type.

An object of the invention is the provision of a lubricator designed tofeed lubricant to reciprocating parts of a mechanism in accordance withthe operating speed thereof.

A further object of the invention is the provision of a lubricatordesigned so that the lubricant fed to a reciprocating member will varyin proportion to the variation in the movement of the said member.

Another object of the invention is the provision of lubricatingapparatus having operating means adapted to be connected with and drivenby the fluid pressure of reciprocating mechanism to be lubricated by theapparatus.

A still further object of the invention is the provision of a force feedlubricator operable by piston actuated means for automaticallylubricating mechanism embodying reciprocating elements.

Still another object of the invention is the provision of a lubricatorof the above character which is compact and durable in construction andreliable in operation.

Other objects and advantages of the invention will become apparent asthe description progresses.

In the accompanying drawings forming a part of this specification and inwhich like reference characters are employed to designate correspondingparts throughout the same:

Figure 1 is a side elevational view of a conventional type of air pumpshowing the lubricating apparatus operatively connected therewith,

Figure 2 is a top plan view of the lubricator,

Figure 3 is a transverse section on the line 3--3 of Figure 2, showingthe piston in one position,

Figure 4 is a similar view showing the piston in a reverse position, T

Figure 5 is a vertical transverse section through the lubricantreservoir,

Figure 6 is a similar View showing the eccentric in a difierentadjustment, and

Figure '7 is a longitudinal section through the lubricator illustratinga plural oi1 chamber assembly.

Referring to the drawings, wherein for the purpose of illustration isshown a preferred embodiment of the invention, the numeral in generallydesignates a vertically elongated chamber having a movable cover H andconstituting an oil reservoir.

The chamber [0 provides for bearings in its opposite side walls. On onewall is an opening to receive a bearing, on the opposite wall is anopening through a projecting bearing. Perforated caps screw on theinside bearing and a terminal cap on the outside bearing. A plurality ofchambers II] can thus be connected as shown in Figure '7.

At one side of the chamber 10 is mounted a cylinder I2 having ports I3at each end for connection with fluid conduits. Within the cyl- I inderi2 is mounted a reciprocating piston l5 embodying a pair of spacedcomplementary disc sections [6 rigidly joined'by a centrally disposedconnecting bar I1. The lower edge of the bar is formed with teeth I8constituting a toothed rack.

A rotary drive shaft extends through the bearings of the walls of theoil chamber l0 and through a recess in the bottom portion of thecylinder I2. Loosely mounted on the shaft 20 within the cylinder is agear wheel 2| formed ment with the teeth of the ratchet wheel.

On that portion of the shaft 20 projecting through the oil chamber In isa driving cam 21. This cam is composed of an inner eccentric 28 keyed tothe shaft 20 and an outer eccentric 29 adjustably mounted on the innereccentric 28-:3 and secured thereto by the set screw 34.

By means of these eccentrics 28 and 29 the eccentricity of the cam 21may be varied from zero to a maximum as shown in Figure 5. Anintermediate adjustment is shown in Figure (LL The cam 21 is disposedwithin and vertically reciprocates an elongated eccentric frame 30formed with an upwardly projecting guide bar 3| at the top and adownwardly extending plunger 32 at the bottom. The guide bar 3| slidesin a groove in a guide frame 33 mounted in the upper portion of the oilchamber.

The plunger 32 is slidably fitted inand functions as a forcer in a pumpcylinder 35 in the bottom of the chamber, the cylinder havingcommunication with an outlet 36 projecting through and outwardly of thechamber bottom. Within the cylinder 35 and outlet 36 are mounted springcheck valves 31 and 38 providing inlet and discharge control means sothat the plunger in con- .pump cylinder;

parts of the compressor. that the piston I5 will be operated at a speedcorjunction with the cylinder form a force pump for ejecting the oilfrom the chamber.

When the lubricator is connected with mechanism embodying reciprocatingelements, as for example with an air pump or compressor as shown atFigure 1, a pair of pipes or conduits 40 connect the end outlets l3 ofthe lubricator cylinder I2 with a cylinder of the air pump. Alubricator'duct 4! connected with the outlet 36 of the oil force pump isdirected from one or more of the oil chambers to the lubricatingconnections on the compressor.

During operation of the compressor the fluid pressure of the cylinderwith which the lubricator is connected functions to reciprocate thelubricator piston I5 in synchronism with or simultaneously with themovement of the compressor piston. As the piston l5 moves. in thedirection shown by the arrow at Figure 3, it rotates the gear wheel 2|in one direction, without effecting movement of the ratchet. When thepiston slides in a reverse direction itrotates the gear wheel in reversemovement at the same time ro- The rotary movement of the shaft 20through simultaneous rotation of the eccentric 21 will cause verticalsliding movement of the pump plunger 32 within the It will thus be notedthat only alternative strokes of the piston l5 actuate the ratchet andthe shaft by which the ratchet is keyed so that the operation of thepiston imparts an intermittent movement to the shaft and,

By this, operation the oil contained in the chamber or reservoir isautomatically fed through the feed pipe 4] to the reciprocating It willalso be observed responding to the operative speed of the compressorpiston and that oil will besupplied to the compressor directly inaccordance with the speed of the moving parts. The pressure in the forcepump structure of the lubricator may be varied by adjusting thecomplementary eccentrics 28 and 29 enabling variation in the stroke ofthe plunger.

As particularly shown in Figure '7, the apparatus may embody one or anydesirable number of oil reservoirs so that different parts ofreciprocating mechanism may be lubricated and various types of lubricantmay be fed thereto. In such from. the various chambers may be varied byadjustment of the operating eccentrics.

While the lubricator has been shown and described in connection with anair compressor it ..vention herein shown and described is to be taken asa preferred example of the same, and that various changes as to theshape, size and arrangement of parts may be resorted to withoutdeparting from the spirit of the invention or the scope of the subjoinedclaims.

Having thus described my invention, I claim:

1. A lubricator comprising an oil chamber, a cylinder, a drive shaftextending through the oil chamber and cylinder, a force .feed pump inthe chamber driven through the medium of'the drive shaft and anadjustable cam, a piston operatively cyl-inden'a drive shaft extendingthrough the oil chamber and cylinder, a force feed pump in thechamber'driventhrough the medium of the drive shaft andan adjustablecam, a piston operatively mounted in the cylinder, and means operable bythe piston for intermittently driving the shaft. I,

3. A lubricator comprising. an oil chamber, a cylinder, a drive shaftextending through the oil chamber and cylinder, a force feed pump in thechamber driven through the medium of the drive shaft and an adjustablecam,'a piston operatively mounted in the cylinder, and gear and ratchetmeans operable by the piston for driving the shaft. 4. A lubricatorcomprising an oil chamber, a cylinder, a drive shaft extending throughthe oil chamber and cylinder, a force feed pump in the chamber driventhrough the medium. of .the drive shaft and an adjustable cam, a pistonoperatively mounted in thecylinder, and gear'and ratchet means in thecylinder operable by the piston for intermittently rotating the shaft.v

5. A lubricator comprising an oil chamber with parallel sides withcentral bea'rings,.a cylinder secured to the chamber and having .arecess in its lower portion transverse bearings in each side wall or therecess; said transverse bearings being co-axial with the chamberbearings,a drive shaft extending through said central and transversebearings, a force feed pump in the chamber having a plunger with a yoke,an 'adthe yoke to vary the quantity'of oil discharged by the plunger, apiston in the cylinder, means to reciprocate the piston, and meansoperable by the pistonfor rotating the drive shaft intermittently.

6. A lubricator. comprising a plurality of oil chambers withparallelsides, having bearings therein adapted to connect the adjoiningchambers, a cylinder secured to the end chamber, said recess havingtransverse bearings in its walls, co-

journalled in these bearings; a force feed pump in .J'ustable cam on thedrive shaft' operating in .65 cylinder having a recess in its lowerportlon, Sald each chamber each having a plunger with a' operating ineach yoke to vary the quantity of oil discharged by the plung'ers, apiston in the cylinder, means to reciprocate the piston, and meansCHARLES E. STEWART.

yoke, adjustable cams on the drive shaft one

